Fountain drawing pen



1934- G A. KAERGER 1,971,525

I FOUNTAIN DRAWING PEN Filed May 24, 1953 Patented Aug. 28, 1934 FOUNTAIN DRAWING PEN Gustav A. Kaerger, Los Angeles, Calif.

V Application May 24, 1933, Serial No. 672,555

. In Germany September 9, 1933 14 Claims, (01. 120-43) This invention relates to improvements in fountain pens and more particularly to fountain drawing or drafting pens.

One of 'theobjects of 'the present invention is 5 to provide a simple, efficient and inexpensive fountain pen designed to automatically feed ink tothe point of the pen for drafting purposes.

Another object of the present invention is to provide a fountain drafting pen so designed,

shaped and constructed as to make it possible to obtain a free flow of ink to the drawing point, and, at the same time, to facilitate adjustment of the parts of the ink reservoir of the pen for varying the thickness of the ink.

Afurther object of this invention is to provide, in a drawing fountain pen, means whereby the thickness of the ink may be regulated by a how regulator located at. the working end of the device.

Another object ofthe present invention is to provide a drawing fountain pen with novel ink reservoir means in the hollow barrel thereof to facilitate feeding of the ink. to the drawing pen point by capillary attraction.

A still further, object of this invention is to provide novel means operated bya rotary movement for finely dividing the'flow of ink to vary the amount of ink'fed to the drawingpen point. A final object is'to provide a drawing pen with an ink fountainiand with a fixed and a movable pen point soarrangedl shaped anddesigned as to facilitate the feeding of ink in varying thick; nesses the'rebetween.

With the above and other objects in view: my invention consists in the combination, arrange-. ment and'details of construction disclosed-in the drawing and specification, and then more par-- ticularly pointed out in the appended claims.

' In the drawing, in which "similar reference numerals designate similar parts throughout the respective views, 1 Figure 1 is a side elevation of my invention,

Figure 2 is a fragmental, longitudinal sectional elevation thereof,

Figure 3 is a fragmental longitudinal sectional elevation of my invention, a

Figure 4 is a front end elevation thereof,

Figure 5 is a fragmental plan view-of the invention, 1

Figure 6;is an end elevation, partly in section of the fixed and" movable jaws, showing the fountaintube mounted therein, taken on line 6--6 of Figurez, Figure 'I isa'cross-section of the device taken on line '1-'I"of Figure 2. 1

Figure 8 is a cross-section taken on line 8-8 of Figure 2,

Figure 9 shows two views, the upper showing a closure cap, and the lower the end of the fountain barrel,

Figure 10 is a fragmental sectional View of a modified rear end of the fountain barrel, and

Figure 11 is a'view similar to Figure 10 but showing the closure cap closed upon the fountain barrel tube.

There is a flexible disk, suchas a rubber member 16 located fixedly and yieldably in the length of' the barrel interiorly thereof, anda metal tube 1 1 has one end thereof operatively mounted into this rubber disk or block 16, the hollow interior or bore of this tube being desig nated 15.

The tube 14 is provided at its outer end with a wedge block or member 1'? whose wider portion is located at the outer end of the tube.

The

outer end of this tube 14, in advance of the wedge block 17 projects snugly and fixedly into the belly 18 of a'movable pen point or nib or lip 20 between which and the fixed nib or lip 21 the ink is designed to be fed for drawing purposes It will be seen that the belly 13 of the movable pen lip or nib 20 has acavity 19 formed therein into which the tube 14 projects directly and with which it communicates.

There is also provided a knurled collar formed in spaced concentric relation upon an externally threaded sleeve 25 which extends in advance of the knurled collar in length and threads adjustably and removably into the threaded inner surface of a bushing or sleeve 21*- frictionally and fixedly fitted into the outer end of the fountain barrel 10'.

A sear spring 23 is located between the tube 14 andthe barrel, being secured by fasteners 24 to the under side at the outer end of the tube 14, and toan elongated stem 26 whose inner end 27 is operatively secured upon the inner surface of the fountain barrel 10.

The stem 26 is provided at its outer end with a cheek or seat 28 in advance of which the stem continues to extend as a prolongation to form'thelower fixed nib or lip 21.

The cheek or seat 28 is opposite to a cheek 28' formed upon the belly 18 interiorly thereof of the movable pen lip or nib 20, and between both checks is defined an ink orifice 29 communicating with the cavity between lips 20 and 21. The lips 20 and 21 are formed convex in cross-section externally and concave interiorly so the internal cavities provide the ink channel or discharge spout 34 for conducting ink to the tip of the drawing pen provided by both of these lips. A plug 31 has a pointed terminal designed to be operatively and adjustably mounted on the lip- 21, so as to extend into the ink orifice 29, to shut this orifice off from ink supply or to vary the size thereof for the free passage of ink to the tip of the drawing pen. The sear spring 23 presses the wedge block 17 againstthe inner circumference of the sleeve 25 which carries the knurled collar 22.

At the filling end of the barrel 10 the form of closure cap shown in Figures 10 and 11 may be employed. A flexible diaphragm or disk 36 normally of concavo-convex formation is employed formed at proper points with holes 35, and in this state it occupies the position between the outer edge of barrel 10 and the end wall of the cap 11, shown in Figure 10, the end wall being also formed with holes 37 for admission of air. As cap 11 is screwed home it compresses 7 and flattens out the flexible disk 36 as shown in Figure 11 to prevent leakage of ink.

In operation, with the plug 31 allowing the orifice 29 to be open, ink flows thru fountain tube 14, into cavity 19, orifice 29, channel 34 to the pen point, for drawing purposes. The operator may engage knurled collar 22, and by turning it inwardly of the barrel cause wedge block 17 to allow tube 14.- tomove up as in Fig. 3, to separate lip 20 slightly from lip 21, to increase thickness of the ink stream, or by moving this collar outwardly reduce the thickness of the ink by causing wedge block to move tube 14 downwardly; this is effected quickly so that any fine flow of ink may be obtained. I do not limit myself to the exact details herein disclosed save as pointed out in appended claims.

What I desire to claim and secure by Letters Patent is:-

1. A device as described consisting of a barrel, a fixed ink feeding nib, a movable ink feeding nib variably yieldable relatively to the fixed nib for varying the thickness of the stream of ink fed, a tubular support for the movable nib for supplying ink between both nibs and manually operated means for actuating said movable nib.

2. A device as described consisting of a barrel containing ink, a closure cap thereon, a fixed ink feeding nib, a movable ink feeding nib associated adjustably with the fixed nib, both nibs being concavo-convex in cross-section to provide an inside cavity, an ink delivery tube extending into the barrel and carrying the movable nib and means, engaging the delivery tube for separating the movable nib from the fixed nib to vary the thickness of the ink fed.

3. A device as described consisting of a barrel containing ink, a fixed ink feeding nib projecting forwardly of the barrel, a movable nib overlapping the fixed nib, both nibs providing an internal cavity, a rubber block fixedly mounted in said barrel, an ink delivery tube having one end secured into said rubber block so the tube may move up and down in said block, means carried by said movable nib for plugging the outer end of the tube, said tube designed to vary the thickness of said cavity, and manually operable means for actuating the tube.

4. A device as described consisting of a barrel containing ink, a rubber block secured into said barrel, an ink delivery tube having one end fixedly secured into said rubber block and having its other end projecting out or" the barrel, a pair of associated inking nibs one closed onto the other, means supported in said barrel between the tube and barrel and carrying one nib, an integral head carried by the other nib and hav ing a socket for receiving the tube whereby ink from the tube may be conducted between the nibs to the outer end of the latter, and means carried by said barrel and engaging said tube for raising one nib relatively to the other nib and for varying the amount of ink fed to both nibs.

5. In a device as described, the combination of a barrel containing ink, a cap closing said barrel, a sleeve threadedly engaging said barrel adjustably, a pair of ink feeding nibs converging longitudinally and vertically forwardly of the barrel, a tube extending longitudinally into the barrel, having one end fixed concentrically and yieldably in said barrel, one of said nibs being movable relatively to the other nib, being closed over the other normally and being carried by the outer end of the tube.

5. In a device as described, the combination of an ink container barrel, a cap closing one end of the barrel, a rubber block secured into said barrel, an ink delivery tube one end being yieldably secured into the rubber block and having its outer end projecting beyond the barrel, a pair of inking nibs one closed upon the other, an arm fixed upon the inner surface of the barrel and fixedly carrying one of said nibs, a socket piece carried by the other nib and designed to close the other end of the delivery tube, said socket piece and fixed nib providing complemental surfaces so as to form an ink inlet port communieating with both nibs, and means adjustably engaging said barrel and designed to raise and lower the socket piece of the mentioned nib to separate it variably from the other nib for varying the flow of ink between both nibs.

'7. In a device as described, the combination of an ink container barrel, a rubber block fixedly mounted therein, an ink delivery tube having one open end secured yieldably in said rubber block, a cap closing one end of the barrel, the other end of the barrel being screw-threaded, a sleeve threadedly mounted in the threaded end of the barrel adjustably, thru which the outer end of the tube swingingly is mounted, means whereby the other end of the tube may move up or down, as the sleeve is adjusted automatically, and a pair relatively fixed and movable ink feeding pen nibs between which ink is fed for drawing purposes, the movable pen nib being movably actuated by the tube to vary the thickness of the stream of ink fed between both nibs, and being supplied with ink from said tube.

8. In a device as described, in combination an ink container barrel, a disk fixedly mounted in said barrel, a tube opening out of said disk at one end and having its other end swingingly mounted in the barrel upon said disk, a wedge block carried by said tube at its outer end, a

sleeve adjustably mounted in said barrel and engaging said wedge block as the sleeve moves longitudinally to actuate the swinging of said tube, an inker device projecting forwardly ofthe barrel and being supplied with ink from said tube,

its

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and means for varying the thickness of the ink stream emanating from said inker as the sleeve is adjusted.

9. In a device as described, the combination of a barrel containing ink, an arm projecting forwardly and fixedly from one end of the barrel, and having a terminal inking pen nib, and formed upon the inner end of the nib with an orifice seat, a movable pen nib closed upon the other nib, and formed with a socket "piece having a cooperating orifice seat between which and the other seat is a delivery orifice for feeding ink between both pen nibs, a plug adjustably tapped into one nib and designed to close the delivery orifice, and an ink delivery fountain in said barrel designed to be manually operated to open one nib relatively to the other nib.

10. In a device as described, the combination of a barrel containing ink, a collar threaded into the barrel adjustably and having a knurled rotary handle, an ink fountain in said barrel filled with ink therefrom and being movably actuated swingingly in said barrel by said collar as the latter is adjusted, and an inker consisting of a pair of contactable pen nibs whose outer ends form a point and at whose inner ends an ink supply duct is located having communication with said fountain.

11. A device as described consisting of an ink barrel, an inking pen carried at one end thereof, an ink flow regulator, an ink delivery tube in said barrel operatively connected at one end with the ink supply of said barrel and designed to movably control the flow regulation, and rotary manual means for actuating the delivery tube.

12. A device as described consisting of an ink reservoir, an inker device at one end thereof, a closure cap at the other end thereof, a combination ink flow regulator and ink delivery tube supplied in said reservoir with ink at one end and conducting same to said inker device and manually controlled means for actuating the flow regulator. 1

13. A device as described consisting of a barrel containing ink, an inker pen carried at one end thereof and provided with a valvular inside control, an ink flow regulator tube projecting at one end into the barrel and at its opposite end into the inker pen and having a swinging movement therein, a sleeve adjustably mounted in said barrel, and means controlled by said sleeve for actuating said fiow regulator.

14. A fountain draftmans pen consisting of an ink reservoir barrel, a sleeve threaded adjustably into said barrel and having an operating collar, a rubber partition fixed in said barrel having an opening, a metal tube extending into said opening atone end and projecting thru said sleeve, means actuated by said sleeve for depressing said tube upon said rubber disk, a spring located between barrel and tube being tensioned as said tube is depressed, and lifting the tube as it relaxes when the sleeve permits, and an inker pen carried by said barrel and having means of communication with said barrel and an ink flow regulator actuated by said tube as it is depressed and lifted.

GUSTAV A. KAERGER. 

